Loose-leaf binder



LOOSE LEAF BINDER Filed Sept. 2, 1945 2 Sheets-Sheet l \\\\0\'\\\INVENTORS. 20 /4 I Ge 0/296 flDawson Aug. 7, 1945.

a. H. DAWSON ETAL LOOSE LEAF BINDER Filed Sept. 2. 1943 2 Sheets-Sht 2-INVENTORS (fear cafifflawso/z e7 HTTOENEY Patented Aug. 7,1945

LOOSE-LEAF BINDER George H. Dawson, Needham, Mass, and Paul 0. Unger,Elmhurst, Ill., assignors to Wilson-Jones Company, Chicago, Ill

chusetts a corporation of Massa- Application September 2, 1943, SerialNo. 500,879

4 Claims.

This invention relates to a loose leaf binder and is particularlyconcerned with the substituv tion of wood ring carrying plates forconventional steel plates.

It is an object of this invention to-provide a loose leaf binder havingwood ring carrying plates with a metal toggle mechanism. It is a furtherobject' of this invention to provide means for properly tensioning thebinder to insure retention of the rings in either open or closedposition. Other objects of the invention Will become apparent upon.reading the following description, taken in conjunction with theaccompanying drawings, in which:

Figure 1 i an end view showing a binder embodying our invention with therings in closed position;

Figure 2 is a cross-sectional view of the binder shown in Figure 1showing the rings in open position; I

Figure 3 is a fragmentary view similar to Figure 2 showing a modifiedform of the invention;

Figure 4 .is a fragmentary top plan view showing the embodiment ofFigures 1 and 2 Figure 5 is a disassembled perspective view of thetoggle mechanism; and

Figure 6 is a fragmentary cross-sectional view showing anotherembodiment of the invention.

In the drawings, the reference numeral 2 indicates the back of a looseleaf binder to which cover members 3 and 4 are hinged in any suitablemanner. A plurality of spring clamps 5 is secured to the back member 2by any suitable means. The spring clamps are arranged transversely inthe back member and have their outer edges curled, as indicated at 6.

A pair of wood ring carrying plates 8 and 9 is arranged longitudinallyin the back member with their outer edges spaced inwardly of the curlededges 6 of the spring clamps 5. 'A plurality of ring sections In issecured to the wood plates 8 and 9 in any suitable manner. The ringcarrying plate 8 is provided on its under surface with a recess l l, anda stop member I2 secured to the ring carrying late 9 by meansof screwsl3 has one end projecting into the recess H to engage the ring carryingplate 8 to limit the vertical the ends of the pin i i. The pins I 4 fitsnugly in the wood ring carrying plates 8 and 9, but in order to preventtheir working loose it is preferred to drive staples in the outerlongitudinal edges of the ring carryin plates to engage the outer endsof the pins l4. These staples, indicated at I6, also provide a smoothmetal edge which slides into thecurled portions 6 of the spring clamps 5when the sheet retaining unit is positioned in the binder. The roundededges Il facilitate the assembly operation.

The staples l6 are provided with a notch 18 on the outer edge. Thespring clamp 5 is provided with a depressed portion l9 which is adaptedto engage the notch it to retain the toggle mechanism in the desiredlongitudinal position relative to the binder when it has been assembled.

The tension with which the ring sections In are held in open or closedrelationship is governed by the co-operation between the togglemechanism and the spring clamps 5.

The embodiment illustrated in Figure 3 is similar to that hereinabovedescribed except that the inner ends of the pins H are provided with beunderstood that the description thereof is movement of the ring carryingplates when the ring sections Ill are moved to open position,

The toggle mechanism comprises a pair of pins l4 each having abifurcated end IS. The pins are driven into the wood ring arrying platesas indicated in Figures 1, 2 and 4 with the bifurcated ends of each pairdisposed at right angles so as to provide a secure working engagementbetween illustrative rather than restrictive, as many details may bemodified or changed without departing from the spirit or scope of ourinvention. Accordingly, we do not desire" to be restricted to the exactdetails of construction described, except as limited by the appendedclaims.

We claim:

1. In a loose leaf binder, a pair of wood ring carrying plates, a springclamp embracing the outer longitudinal edges of said ring carryingplates, and a pin secured to each of said plates, said pins having theirinner ends engaged to permit a toggle motion by said plates.

2. In a loos leaf binder, a spring clamp, a pair of non-metallic ringcarrying plates arranged in said spring clamp, each of said plateshaving a pin driven therein, and a metal staple driven into each ringcarrying plate and engaging the outer end of one of said pins, the innerendsof said pins being interengaged to permit a toggle motion by saidring carrying plates.

3. In a. ring binder, a back member, a spring clamp secured to said backmember, a pair of wood ring carrying plates each having its outer edgeengaged by said spring clamp, and a pair of pins driven into said ringcarrying plates, said pins having their inner ends en aged to maintainsaid ring carrying plates in position with their outer edges engaged bysaid spring clamp while permitting arcuate movement or said ringcarrying plates on axes coincident with their outer longitudinal edges.

4. In a loose leaf binder, a. plurality ,of spring clamps, a pair "ofnon-metallic ring carrying plates arranged in said spring clamps, saidring carrying plates having a toggle motion to cause the rings carriedthereby to open and close, and a pin driven into each of said ringcarrying plates, said pins 'having bifurcated interengaged inner ends,and means secured to one ring carrying plate engaging said otherringcarrying plate to maintain said ring carrying plates in said springclamps while permitting said toggle motion.

GEORGE H. DAWSON. PAUL O. UNGER.

